What would you like to be added/modified:

To improve project stability, we need more tests to cover corner cases.
And the code coverage is around 50% currently, we need to add more tests to improve it.

To improve case coverage, we may need a list of cases to track the work.
For code coverage, simply check bef

非常感谢提供Mosquitto的集群程序。
在使用时，当我开启不允许匿名登陆后，各个节点无法连接。
进一步尝试在配置 Certificate based SSL/TLS support 中的 ca 路径后，节点之间出现 OpenSSL Error: error:140760FC:SSL routines:SSL23_GET_CLIENT_HELLO:unknown protocol问题。
请问是否是因为不支持该功能？还是在配置上需要增加配置？